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US5989274A Expired / Lapsed US ⏱️ 0.0 years remaining

Methods and devices for improving blood flow to a heart of a patient

Assignee: Ethicon Endo Surgery Inc
•
Filing: 1996-12-20
•
Granted: 1999-11-23
•
Expires: 2016-12-20
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Abstract

Abstract One device in accordance with the present invention includes a surgical device for creating channels in tissue of a patient. The device includes a catheter defining a lumen and a transducer assembly carried by the catheter along a lengthwise dimension of the catheter. An end effector is operatively coupled to the transducer assembly and extends distally relative to the transducer assembly. The end effector has a vibrating channel-forming tip wherein the channel-forming tip is adapted to create channels in the heart of a patient. A method in accordance with the present invention includes the steps of inserting an end effector having a tip into a patient, placing the tip of the end effector in direct contact with a surface of the heart, energizing the end effector to cause the tip to vibrate, piercing through the surface of the heart with the tip to create a channel, and removing the end effector.

Inventors

  • 👤 Thomas W. Davison
  • 👤 Stephen DiMatteo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 16:23
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320068; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00247; A61B2017/320069; A61B2017/32007; A61B2017/320071; A61B2017/320072; A61B2017/320073; A61B2017/320089; A61B18/00; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 97 words
A method of improving blood flow in a heart of a patient comprising the steps of: inserting a catheter in a cardiovascular system of the patient; advancing the catheter through the cardiovascular system until it is positioned in a left ventricle of the heart of the patient; vibrating a distal end of an acoustic assembly at an ultrasonic frequency; contacting the heart with the distal end of the acoustic assembly to create a channel of a selected depth in the inner surface of the heart; and withdrawing distal the end of the acoustic assembly from the heart.
Claim 2
Independent Claim 97 words
A method of improving blood flow in a heart of a patient comprising the steps of: inserting a catheter in a cardiovascular system of the patient; advancing the catheter through the cardiovascular system until it is positioned in a left ventricle of the heart of the patient; vibrating a distal end of an acoustic assembly at an ultrasonic frequency; contacting the heart with the distal end of the acoustic assembly to create a channel of a selected depth in the inner surface of the heart; and withdrawing distal the end of the acoustic assembly from the heart.
Claim 3
Dependent Claim 23 words
The method of claim 1 further repeating the steps of advancing, contacting and withdrawing to form a plurality of channels in the heart.
Claim 4
Independent Claim 87 words
A method of improving the blood flow to a heart of a patient comprising the steps of: providing a catheter carrying an end effector having a distal end; vibrating the distal end of the end effector at a selected frequency; contacting the distal end of the end effector with a ventricular wall of a heart; advancing the distal end of the end effector into the ventricle wall; creating a channel in the ventricular wall with the distal end; and removing the end effector from the ventricle wall.
Claim 5
Independent Claim 87 words
A method of improving the blood flow to a heart of a patient comprising the steps of: providing a catheter carrying an end effector having a distal end; vibrating the distal end of the end effector at a selected frequency; contacting the distal end of the end effector with a ventricular wall of a heart; advancing the distal end of the end effector into the ventricle wall; creating a channel in the ventricular wall with the distal end; and removing the end effector from the ventricle wall.
Claim 6
Dependent Claim 31 words
A method of claim 3 wherein the ventricular wall has an outer surface and an inner surface, and wherein the channel starts at the inner wall and extends into the myocardium.
Claim 7
Dependent Claim 15 words
The method of claim 3 wherein the frequency is between 20 kHz and 100 kHz.
Claim 8
Dependent Claim 22 words
The method of claim 1 wherein the step of forming a channel is accomplished without synchronizing to a heartbeat of a patient.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-11-22 2003-05-24 2003-11-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-11-22 2007-05-24 2007-11-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-11-22 2011-05-24 2011-11-23 $7700.00 Window Closed / Lapsed

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